13949184981 has 8 divisors (see below), whose sum is σ = 19692967104. Its totient is φ = 8752429760.

The previous prime is 13949184961. The next prime is 13949184983. The reversal of 13949184981 is 18948194931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13949184981 - 2¹³ = 13949176789 is a prime.

It is a super-2 number, since 2×13949184981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13949184983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136756665 + ... + 136756766.

It is an arithmetic number, because the mean of its divisors is an integer number (2461620888).

Almost surely, 2^13949184981 is an apocalyptic number.

It is an amenable number.

13949184981 is a deficient number, since it is larger than the sum of its proper divisors (5743782123).

13949184981 is a wasteful number, since it uses less digits than its factorization.

13949184981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273513451.

The product of its digits is 2239488, while the sum is 57.

The spelling of 13949184981 in words is "thirteen billion, nine hundred forty-nine million, one hundred eighty-four thousand, nine hundred eighty-one".